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decoder: wait for the player only if the music pipe is full 

Prevent superfluous wakeups and a deadlock condition.
This commit is contained in:
Max Kellermann 2008-11-13 02:54:56 +01:00
parent 1a3945b563
commit 2860b1b60f
1 changed files with 5 additions and 4 deletions
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9
src/decoder_api.c
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@ -159,13 +159,13 @@ tag_add_stream_tags(const struct tag *src_tag, const struct input_stream *is)
* one.
*/
static enum decoder_command
need_chunks(struct input_stream *is)
need_chunks(struct input_stream *is, bool wait)
{
if (dc.command == DECODE_COMMAND_STOP ||
dc.command == DECODE_COMMAND_SEEK)
return dc.command;
if (is == NULL || input_stream_buffer(is) <= 0) {
if ((is == NULL || input_stream_buffer(is) <= 0) && wait) {
notify_wait(&dc.notify);
notify_signal(&pc.notify);
}
@ -255,7 +255,8 @@ decoder_data(struct decoder *decoder,
data += nbytes;
if (length > 0) {
enum decoder_command cmd = need_chunks(is);
enum decoder_command cmd =
need_chunks(is, nbytes == 0);
if (cmd != DECODE_COMMAND_NONE)
return cmd;
}
@ -276,7 +277,7 @@ decoder_tag(mpd_unused struct decoder *decoder, struct input_stream *is,
tag = tag2;
while (!music_pipe_tag(tag)) {
enum decoder_command cmd = need_chunks(is);
enum decoder_command cmd = need_chunks(is, true);
if (cmd != DECODE_COMMAND_NONE)
return cmd;
}